“Beyond the Glistening Gravel Water lies a mauvaise terre, sometimes called the First Desert, and upon the old road water is not found in the dry season within forty-nine miles a terrible jornada for laden wagons with tired cattle. . .
. . . The Spanish-Mexican term for a day’s march. It is generally applied to a waterless march, e.g., ‘Jornada del Muerto’ in New Mexico, which, like some in the Sahara, measures ninety miles across.”